More to explore:
thats the best thing i've ever seen..
This site has a list of fun things you can put stamps on and throw in the mailbox :)
mail a ball
Happy-Go-Lucky: Fun Things to Send in the Mail
How Fun!! Bling!
This is so fun - lots of ideas of things that are 13 oz or less that you can MAIL!
Water Bottle mail...13 ounces or less. Make a slice in a water bottle. Slip fun goodies in. Press mailing label over slice and MAIL! How cool is that?
Really fun for kids
Decorate bottle in great for sending a message to your secret sister.
water bottle cookie package-fun re-use!